Sensirion SEN5x environmental sensor nodes

The Sensirion SEN5x environmental sensor nodes are designed to help improve health and comfort by measuring and reporting the levels of relevant indoor pollutants in particulate matter, volatile organic compounds (VOCs), oxidising gases (NO_x and O₃), humidity and temperature in a variety of air quality applications. Optimised with multiple sensing parameters, the nodes are designed to help save valuable R&D, BOM and assembly costs by providing an all-in-one sensor solution that replaces multiple environmental sensors.

The nodes feature integrated proprietary measurement algorithms, including VOC/NO_x index calculation, humidity compensation and temperature compensation, which enable straightforward integration into HVAC and air quality applications. Along with the temperature compensation engine, the devices also incorporate a Sensirion Temperature Acceleration Routine (STAR) engine, which accelerates the devices’ response to ambient temperature changes by a factor of two to three.

The sensors offer easy integration, fully calibrated outputs with a digital interface and measurement of vital air quality parameters in a single device. The nodes provide one driver for up to eight data signals and perform all operations and communications through an I²C interface. They offer a lifetime of over 10 years and are available in a compact 52.8 x 43.6 x 22.3 mm form factor.